I'm actually quite surprised that nobody has mentioned it on here unless they have and I've missed it, but literally 5 mins from where I live (I'll be able to see it when it's built from my front window) Paramount are building a new park, it's gonna be built on Swanscombe Peninsula in Kent
The park will have direct links to London and Europe via HS1 (Ebbsfleet International)
There's a lot more info on their website about the construction and time frame etc but the park is set to open the summer of 2021
Link to the Paramount London website http://www.londonparamount.info/
Below I've attached some of the concept art from the website